MESON Chess Problem Database

Problem Display
PID: 227794 (3N4/8/3B4/1ppkP3/3p1p2/2P2Kn1/3N4/6Q1 w - - 0 1)

Rothler, Emil

Magyar Sakkvilag, 1926

3N4/8/3B4/1ppkP3/3p1p2/2P2Kn1/3N4/6Q1

#2

7 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.Qg8#
    • 1...Sh1
      • 2.Qg8#
    • 1...Se2
      • 2.Qg8#
    • 1...Se4
      • 2.Qg8#
    • 1...Sf5
      • 2.Qg8#
    • 1...Sh5
      • 2.Qg8#
    • 1...dxc3
      • 2.Qxc5#
    • 1...d3
      • 2.Qxc5#
    • 1...b4
      • 2.c4#
    • 1...c4
      • 2.Qxd4#
  • Keys
    • 1.Qb1!
      • 1...dxc3
        • 2.Qd3#
      • 1...b4
        • 2.c4#
      • 1...Sf1
        • 2.Qe4#
      • 1...Sh1
        • 2.Qe4#
      • 1...Se2
        • 2.Qe4#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sf5
        • 2.Qe4#
      • 1...Sh5
        • 2.Qe4#
      • 1...d3
        • 2.Qxd3#
      • 1...c4
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 9
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE::QAB(A)
    • P(b);OGATE,XP(C)::QAR1(A),XP(e)
    • P(b);OGATE::QAR1(A),XP(e)
    • P(d);N_GUARD::P(C)
    • P(e);N_GUARD::QAR1(A),XP(b)
  • Actual
    • Q(A);
    • Vars
      • P(b);OGATEB,XP(C)::QAR2(A)
      • P(d);N_GUARD::P(C)
      • S(a);N_GUARD::QAB1(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • P(b);OGATEB::QAR2(A),XP(b)
      • P(e);OGATEB::QAR2(A),XP(d)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).